Trolley.



PATENTBD AUG. 30, 1904.

L. F. FORRBSTEB.

TROLLEY. nruonxoa rum 31mm, 1004.

Etna-sacs:

UNITED STATES Patented August 30, 1904.

PATENT OFFICE.

TROLLEY SPECIFICATION forming part of Letters Patent No, 769,070, dated August 30, 1904.

Application fllod January 16, 1904. Boa-lei No. 189,227. (No model.)

Be it. known that I, Lxsnnr 1*. l oamas'ruu, a citizen of the United States, residiua at Foxborodn the eountyoi' Nor foli; and Stateof Massachusetts. have invented new and useful improvements in 'lrolle vs of which the followin,i is a specification.

This invention relates to an improved trolley for electrie railways the object of the invention being to provide a trolley in which the trol luv-wheel rotates with the least possible amount of friction, thus reducing the wear upon the trolley-wire.

The invention consists in a trolley comprisinc in its construction a frame upon which two carrier-wheels are journaled to rotateumd upon the periphery of these wheels is supported a trolley-whmil havin rotatory Contact with the peripheries of said carrier-wheels.

The invention further consists in the com bination and iu'ranmmentof parts set forth in the following specification and partieuiariy pointed out in the claims thereof.

Referring to the drawings Figure l is a ilan view of my improved trolley. Fig. 2 is longitudinal section. partly in elevatiom taken on line L 2 of Fig. 1.

Like numerals refer to like parts throughout both views of the drawings.

in the drawings, 6 is a trolley-frame, and it n trolley-polo fast thereto. The trolley-{mono I: has two sides 7 7 and ends 8 9, joining said sides. The sides T T and ends 8 ll iuclose a space i Two trolley carrier-wheels 11 it are located in the space It) and are journaled to rotate upon pins 12 ILL fast to the frame 5. Each of the trolley currier-wheels ll is provided with two cylimlrieal llanges l3 l4, and between these [hinges is an annular groove 15. The trolley'wheel i6 is provided with an annular groove 17 in its pmiphenv in a manner well known to those skilled in this art and runs in contact with a trolley-wire l8. Said trolley-wheel is located between the flanges 1-! H of the trolley Cl\lll(!l-Wll(.0lH l1, and the annular groove if) has projecting from o ipo' m'te faces thereof cylindrical hubs 10 am 20. respectively.

The hub 19 rests upon and rotates in contact with the flanges 13 13, and the hub 20 rests upon and rotates in contact with the flanges i4 14. A guard rod or pin .21 projects through the sides 7 T of the trolley-friune and through a hole 22, extending through the trolleawvheel 16, the diameter of said hoie being much larger than the diameter of the rod 21. so that as the trolley-wheel is rotated itdoes not bear against said guard-rod while the hubs of said trolley-wheel rest upon the peripheries of the flanges l3 and H; but when the trolley-wheel in is removed from contact with the trolley-wire 18 the guard-rod 21 prevents the trolley-wheel from becoming aceidentalh displaced from between the trolley carrierwheels.

The operation of the device is as follows: The trolley-wheel i4) rests-against the trolleywire 18 and is rotated as said wheel is carried lonuitmlinallw of said wire the friction necessary to rotate said trollev-wheel being very much diminished by reason of the fact that the hubs l9 and .20 rest upon theperipheries of the flanges 13 and H, respectively, and as said earrier-wheels rotate upon the journal pins 12 it is evident that the only resistance which it is necessary for the trolley-wheel to overcome in rotating is thatof a rolling, friction.

Having thus described my invention, what 1 claim and desire to secure by Letters Patent, is

l. A trolley forelectric railwivvs eoniprisi no in its construction a frame, two trolley carrierwheels jourualed to rotate upon said frameuuid a trolley-wheel supported upon said carrierwheels.

2. A trolley for electric railwayscomprisiu z in its construction a frame, two trolley carrierwheels journaled to rotateupon said 1' l'ltll10,ttl1(i a troliey-wheel supported u pen and in rotatory contact with the periphery of saiil carrierwheels.

3. A trolley forelectric railways comprising in its construction a frame, two trolley carrierwheels journaled to rotate upon said frame, a trollewwheel sup iorted upon said carrierwheels and a guard-rod fast to said frame and projecting through a hole provided in said trolley-wheel of lar er diameter than said rod.

4. A trolley fore ectric railways compris-iila,

in' its construction a frame, two trolley carrierwheels, eaeh provided with two cylindrical flanges with an annular groove therebetwecn, a trolley-wheel having a cylindrical hub projecting from each face thereof and resting upon and in contact with the peripheries of said cylindrical flanges.

5. A trolley for electric railways comprising in its construction a frame, two trolley carrierwhcels each provided with two cylindrical flanges with an annular groove therebetweeu, a trolley-wheel having a cylindrical hub prol jecting from each face thereof and resting upon and in contact with the peripheries of said cylindrical flanges, and a guard-rod fast to said frame and projecting through a hole provided in said trolley-wheel of larger diameter than said rod.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. 20

LINDEY F. FORRESTER. W'itnessea:

CHARLES S. (:roomNo, ANNIE J. DAILEY. 

